Toothbrush



FIG. 1 is a front-right perspective view of a toothbrush according to a first embodiment of our design;

FIG. 2 is a left-front perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left-side view thereof;

FIG. 6 is a right-side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof;

FIG. 9 is a front-right perspective view of a toothbrush according to a second embodiment of our design;

FIG. 10 is a left-front perspective view thereof;

FIG. 11 is a front view thereof;

FIG. 12 is a rear view thereof;

FIG. 13 is a left-side view thereof;

FIG. 14 is a right-side view thereof;

FIG. 15 is a top view thereof; and,

FIG. 16 is a bottom view thereof.

The broken lines showing the head and neck illustrate portions of the toothbrush that form no part of the claimed design. 

CLAIM The ornamental design for a toothbrush, as shown and described. 